The acronym âSAP,â for Systems, Applications, and Products in Data Processing, is the name of a corporation that specializes in business products and services designed to improve operational efficiency.
In 1932, Karl Jansky at Bell Labs revealed that stars and other objects in space radiated radio waves. Credit: NRAO/AUI. Radio waves have the longest wavelengths in the electromagnetic spectrum. They range from the length of a football to larger than our planet.Heinrich Hertz proved the existence of radio waves in the late 1880s. He used a spark gap attached to an induction coil and a separate spark gap on a receiving antenna.n 1932, Karl Jansky at Bell Labs revealed that stars and other objects in space radiated radio waves. Credit: NRAO/AUI. Radio waves have the longest wavelengths in the electromagnetic spectrum. They range from the length of a football to larger than our planet.
Electromagnetic waves are waves of energy formed by accelerating charge. They are classified by the wavelength, frequency, and energy. The electromagnetic spectrum is an illustration of such classification. At one end of the spectrum are the longer wavelength, lower frequency, and lower energy waves. At the other end are the shorter wavelength, higher frequency, and higher energy waves. The spectrum in order from the lower frequency to the higher frequency is radio waves, microwaves, infrared, visible light, ultraviolet, x-ray, and gamma ray.